feature/improve code quality and tests

[codebude]

• Upgrade Python packages
• Apply frontend dependencies security patches
• Upgrade docs packages/dependencies
• Upgrade playwright in e2e test image
• Update setup test mocks
• Fix backend type errors with ty and add config
• Pytest for uncovered code branches

[github-actions]

🧪 Test Results — c385775

❌ Backend (pytest) — 845 passed, 2 failed, 0 skipped (847 total)
✅ CLI (pytest) — 54 passed, 0 failed, 0 skipped (54 total)
✅ Frontend (vitest) — 391 passed, 0 failed, 0 skipped (391 total)
✅ E2E (Playwright) — 0 passed, 0 failed, 0 skipped (0 total)

Summary: 1290 ✅ passed, 2 ❌ failed (1292 total)

[github-actions]

🧪 Test Results — f7fb650

✅ Backend (pytest) — 847 passed, 0 failed, 0 skipped (847 total)
✅ CLI (pytest) — 54 passed, 0 failed, 0 skipped (54 total)
✅ Frontend (vitest) — 391 passed, 0 failed, 0 skipped (391 total)
✅ E2E (Playwright) — 60 passed, 0 failed, 0 skipped (60 total)

Summary: ✅ All 1352 tests passed